Police confirmed that one suspect is in custody over the shooting incident in the city of Fredericton.
"Please continue to avoid the area of Brookside Drive between Main and Ring Road. An incident has resulted in at least four people killed. More information will be available when we can confirm," the police tweeted.
The incident is active and police continue to work on the scene of a shooting on Brookside Drive. Police urged people to avoid the area as well as "stay in their homes with doors locked at this time for their safety."
Following the incident, Canadian Prime Minister Justin Trudeau said in a statement that he is closely following the shooting.
"Awful news coming out of Fredericton. My heart goes out to everyone affected by this morning’s shooting. We’re following the situation closely," Trudeau said in a Twitter message.
In July, another deadly shooting occurred in Toronto. A woman and a young girl were killed and 13 others injured in the attack. The person allegedly responsible for the shooting, 29-year-old Faisal Hussain, died from a gunshot wound, but the authorities did not specify whether he was shot by the police. According to the AP news agency, Hussain's family said he suffered from serious mental problems, but they never expected him to become violent.